/**
 * @Author Zhouchb
 * @Create 2021-10-2021/10/27 :17:00
 * @Description
 */
public class digui {
    public static void main(String[] args) {
        int i = 4;
        System.out.println(test(i));
    }
    public static int test(int i){
        if (i==2){
            return 3;
        }
        return test(i-1);
    }
}
